Emerging Infectious Disease ISSN: 1080-6059

Mycobacterium avium subsp. hominissuis Infection in 2 Pet Dogs, Germany

Verena Haist*, Frauke Seehusen*, Irmgard Moser†, Helmut Hotzel†, Ulrich Deschl‡, Wolfgang Baumgärtner*, and Peter Wohlsein*

Author affiliations: *University of Veterinary Medicine Hanover, Hanover, Germany; †Federal Research Institute for Animal Health, Jena, Germany; ‡Boehringer Ingelheim Pharma GmbH & Co. KG, Biberach/Riss, Germany;

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Figure

A) Mesenteric lymph node of Yorkshire Terrier shows diffuse granulomatous lymphadenitis with extensive infiltration of macrophages, foci of pyogranulomatous inflammation (arrowhead), and focal necrosis (asterisk). Hematoxylin and eosin stain; scale bar represents 100 μm. B) Retropharyngeal lymph node of schnauzer shows innumerable acid-fast bacilli (arrows) within the cytoplasm of macrophages. Ziehl-Neelsen stain; scale bar represents 25 μm.

Figure. A) Mesenteric lymph node of Yorkshire Terrier shows diffuse granulomatous lymphadenitis with extensive infiltration of macrophages, foci of pyogranulomatous inflammation (arrowhead), and focal necrosis (asterisk). Hematoxylin and eosin stain; scale bar represents 100 μm. B) Retropharyngeal lymph node of schnauzer shows innumerable acid-fast bacilli (arrows) within the cytoplasm of macrophages. Ziehl-Neelsen stain; scale bar represents 25 μm.

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